Warren thank you for the input. Here are the emisson numbers:

Reading Limit
HC ppm (Idle) 0358 0220 Fail
CO% (Idle) 03.68 01.20 Fail
HC ppm (2,500 RPM) 0042 0220 Pass
CO% (2,500 RPM) 00.11 01.20 Pass

This test was run with a tank of 89 octane. After failing the test with these results and realizing the error in type of gasoline I filled the tank with 93 octane added a can of techron additive ran about 75 miles on the highway, and tried to retest (the additive was stil in the tank). The test stand would not allow the test to run to completion it kept requiring longer test times until the tech gave up. Since then I replaced the plugs (as described in my original post) and have a fresh tank of 93 octane with no additive.